Dyson Case at EU Court Bites the Dust

Ever since Volkswagen AG admitted that it systematically cheated on emissions tests in Europe and the U.S., the way regulators measure a machine’s environmental impact — and how these measurements can be manipulated — has come under scrutiny.

But at the European Union’s second-highest court Wednesday, the focus wasn’t on cars. It was on vacuum cleaners.

And in contrast to EU tests for nitrogen-dioxide emissions, where governments recently decided to change the testing method to more accurately capture a car’s real emissions, the EU’s General Court told British vacuum-cleaner maker Dyson Ltd. to suck it up and accept the existing rules.